moderator

mod·er·a·tor  (md-rtr)

n.

1. One that moderates, as:

a. One that arbitrates or mediates.

b. One who presides over a meeting, forum, or debate.

2. The officer who presides over a synod or general assembly of the Presbyterian Church.

3. Physics A substance, such as water or graphite, that is used in a nuclear reactor to decrease the speed of fast neutrons and increase the likelihood of fission.

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moderator

Noun

1. Presbyterian Church a minister appointed to preside over a Church court, synod, or general assembly

2. a person who presides over at a public or legislative assembly

3. a material, such as heavy water, used for slowing down neutrons in nuclear reactors

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moderator  (md-rtr)

A substance, such as graphite, water, or heavy water, placed in a nuclear reactor to slow neutrons down to speeds at which they are more likely to be captured by fissionable components of a fuel (such as uranium-235) and less likely to be absorbed by nonfissionable components of a fuel (such as uranium-238). Also called neutron moderator. See also slow neutron.

Thesaurus

Noun	1.	moderator - any substance used to slow down neutrons in nuclear reactors nuclear reactor, reactor - (physics) any of several kinds of apparatus that maintain and control a nuclear reaction for the production of energy or artificial elements inhibitor - a substance that retards or stops an activity deuterium oxide, heavy water - water containing a substantial proportion of deuterium atoms, used in nuclear reactors
	2.	moderator - in the Presbyterian church, the officer who presides over a synod or general assembly presiding officer - the leader of a group meeting
	3.	moderator - someone who presides over a forum or debate presiding officer - the leader of a group meeting
	4.	moderator - someone who mediates disputes and attempts to avoid violence go-between, intercessor, intermediary, intermediator, mediator - a negotiator who acts as a link between parties modifier - a moderator who makes less extreme or uncompromising

Translations

moderator [ˈmɔdəreɪtəʳ] n (= mediator) → moderador(a) m/f

moderator [ˈmɔdəreɪtəʳ] n (Rel);

Moderator → président m (de l'Assemblée générale de l'Église presbytérienne);

(Pol) → modérateur m

moderator [ˈmɔdəreɪtəʳ] n (Eccl) → Synodalpräsident m

moderator [ˈmɔdəreɪtəʳ] n → moderatore/trice;

(REL) → moderatore in importanti riunioni ecclesiastiche